Home / 117,921.02-162,753.44-66,938.54

Finding the Fourth Proportional to 117,921.02, 162,753.44 and 66,938.54

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Solution

The fourth proportional to 117,921.02, 162,753.44 and 66,938.54 is: 92,387.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,921.02 : 162,753.44 = 66,938.54 : x
  2. Step 2: Convert to fraction form
    117,921.02/162,753.44 = 66,938.54/x
  3. Step 3: Cross multiply
    117,921.02x = 162,753.44 × 66,938.54
  4. Step 4: Simplify right side
    117,921.02x = 10,894,476,505.12
  5. Step 5: Solve for x
    x = 10,894,476,505.12/117,921.02
  6. Step 6: Final answer
    x = 92,387.91

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.